<template>
	<view class="v-keyboard" @touchmove.stop.prevent="noop">
		<view
			class="v-keyboard__button-wrapper"
			v-for="(item, index) in numList"
			:key="index"
		>
			<view
				class="v-keyboard__button-wrapper__button"
				:style="[itemStyle(index)]"
				@tap="keyboardClick(item)"
				hover-class="v-hover-class"
				:hover-stay-time="200"
			>
				<text class="v-keyboard__button-wrapper__button__text">{{
					item
				}}</text>
			</view>
		</view>
		<view class="v-keyboard__button-wrapper">
			<view
				class="v-keyboard__button-wrapper__button v-keyboard__button-wrapper__button--gray"
				hover-class="v-hover-class"
				:hover-stay-time="200"
				@touchstart.stop="backspaceClick"
				@touchend="clearTimer"
			>
				<v-icon name="backspace" color="#303133" size="28"></v-icon>
			</view>
		</view>
	</view>
</template>

<script>
import props from "./props.js";
import mpMixin from "../../libs/mixin/mpMixin.js";
import mixin from "../../libs/mixin/mixin.js";

/**
 * keyboard 键盘组件
 * @description
 * @tutorial
 * @property {String}	mode		键盘的类型，number-数字键盘，card-身份证键盘
 * @property {Boolean}	dotDisabled	是否显示键盘的"."符号
 * @property {Boolean}	random		是否打乱键盘按键的顺序
 * @event {Function} change		点击键盘触发
 * @event {Function} backspace	点击退格键触发
 * @example
 */
export default {
	mixins: [mpMixin, mixin, props],
	data() {
		return {
			backspace: "backspace", // 退格键内容
			dot: ".", // 点
			timer: null, // 长按多次删除的事件监听
			cardX: "X", // 身份证的X符号
		};
	},
	computed: {
		// 键盘需要显示的内容
		numList() {
			let tmp = [];
			if (this.dotDisabled && this.mode == "number") {
				if (!this.random) {
					return [1, 2, 3, 4, 5, 6, 7, 8, 9, 0];
				} else {
					return uni.$u.randomArray([1, 2, 3, 4, 5, 6, 7, 8, 9, 0]);
				}
			} else if (!this.dotDisabled && this.mode == "number") {
				if (!this.random) {
					return [1, 2, 3, 4, 5, 6, 7, 8, 9, this.dot, 0];
				} else {
					return uni.$u.randomArray([
						1,
						2,
						3,
						4,
						5,
						6,
						7,
						8,
						9,
						this.dot,
						0,
					]);
				}
			} else if (this.mode == "card") {
				if (!this.random) {
					return [1, 2, 3, 4, 5, 6, 7, 8, 9, this.cardX, 0];
				} else {
					return uni.$u.randomArray([
						1,
						2,
						3,
						4,
						5,
						6,
						7,
						8,
						9,
						this.cardX,
						0,
					]);
				}
			}
		},
		// 按键的样式，在非乱序&&数字键盘&&不显示点按钮时，index为9时，按键占位两个空间
		itemStyle() {
			return (index) => {
				let style = {};
				if (this.mode == "number" && this.dotDisabled && index == 9)
					style.width = "464rpx";
				return style;
			};
		},
		// 是否让按键显示灰色，只在非乱序&&数字键盘&&且允许点按键的时候
		btnBgGray() {
			return (index) => {
				if (
					!this.random &&
					index == 9 &&
					(this.mode != "number" ||
						(this.mode == "number" && !this.dotDisabled))
				)
					return true;
				else return false;
			};
		},
	},
	created() {},
	emits: ["backspace", "change"],
	methods: {
		// 点击退格键
		backspaceClick() {
			this.$emit("backspace");
			clearInterval(this.timer); //再次清空定时器，防止重复注册定时器
			this.timer = null;
			this.timer = setInterval(() => {
				this.$emit("backspace");
			}, 250);
		},
		clearTimer() {
			clearInterval(this.timer);
			this.timer = null;
		},
		// 获取键盘显示的内容
		keyboardClick(val) {
			// 允许键盘显示点模式和触发非点按键时，将内容转为数字类型
			if (!this.dotDisabled && val != this.dot && val != this.cardX)
				val = Number(val);
			this.$emit("change", val);
		},
	},
};
</script>

<style lang="scss" scoped>
@import "../../libs/css/components.scss";
$v-number-keyboard-background-color: rgb(224, 228, 230) !default;
$v-number-keyboard-padding: 8px 10rpx 8px 10rpx !default;
$v-number-keyboard-button-width: 222rpx !default;
$v-number-keyboard-button-margin: 4px 6rpx !default;
$v-number-keyboard-button-border-top-left-radius: 4px !default;
$v-number-keyboard-button-border-top-right-radius: 4px !default;
$v-number-keyboard-button-border-bottom-left-radius: 4px !default;
$v-number-keyboard-button-border-bottom-right-radius: 4px !default;
$v-number-keyboard-button-height: 90rpx !default;
$v-number-keyboard-button-background-color: #ffffff !default;
$v-number-keyboard-button-box-shadow: 0 2px 0px #bbbcbe !default;
$v-number-keyboard-text-font-size: 20px !default;
$v-number-keyboard-text-font-weight: 500 !default;
$v-number-keyboard-text-color: $v-main-color !default;
$v-number-keyboard-gray-background-color: rgb(200, 202, 210) !default;
$v-number-keyboard-v-hover-class-background-color: #bbbcc6 !default;

.v-keyboard {
	@include flex;
	flex-direction: row;
	justify-content: space-around;
	background-color: $v-number-keyboard-background-color;
	flex-wrap: wrap;
	padding: $v-number-keyboard-padding;

	&__button-wrapper {
		box-shadow: $v-number-keyboard-button-box-shadow;
		margin: $v-number-keyboard-button-margin;
		border-top-left-radius: $v-number-keyboard-button-border-top-left-radius;
		border-top-right-radius: $v-number-keyboard-button-border-top-right-radius;
		border-bottom-left-radius: $v-number-keyboard-button-border-bottom-left-radius;
		border-bottom-right-radius: $v-number-keyboard-button-border-bottom-right-radius;

		&__button {
			width: $v-number-keyboard-button-width;
			height: $v-number-keyboard-button-height;
			background-color: $v-number-keyboard-button-background-color;
			@include flex;
			justify-content: center;
			align-items: center;
			border-top-left-radius: $v-number-keyboard-button-border-top-left-radius;
			border-top-right-radius: $v-number-keyboard-button-border-top-right-radius;
			border-bottom-left-radius: $v-number-keyboard-button-border-bottom-left-radius;
			border-bottom-right-radius: $v-number-keyboard-button-border-bottom-right-radius;

			&__text {
				font-size: $v-number-keyboard-text-font-size;
				font-weight: $v-number-keyboard-text-font-weight;
				color: $v-number-keyboard-text-color;
			}

			&--gray {
				background-color: $v-number-keyboard-gray-background-color;
			}
		}
	}
}

.v-hover-class {
	background-color: $v-number-keyboard-v-hover-class-background-color;
}
</style>
